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Surface-enhanced Raman scattering element

  • US 9,857,306 B2
  • Filed: 08/09/2013
  • Issued: 01/02/2018
  • Est. Priority Date: 08/10/2012
  • Status: Active Grant
First Claim
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1. A surface-enhanced Raman scattering element comprising:

  • a substrate having a principal surface;

    a fine structure part formed on the principal surface and having a plurality of projections; and

    a conductor layer formed on the fine structure part and constituting an optical function part for generating surface-enhanced Raman scattering;

    wherein the projections have respective outer surfaces provided with recessed regions;

    wherein a plurality of gaps are formed in the conductor layer by entering the recessed regions; and

    wherein, when attention is focused on a pair of projections adjacent to each other, a width of the gap formed by the conductor layer entering a recessed region provided in the outer surface of a projection is smaller than a distance between the conductor layer formed on the outer surface of one projection and that formed on the outer surface of the other projection,the recessed region is formed in a region that is at least not a root part of the projection, and the root part of the projection includes a region that is not a recessed region.

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